From 385d3632ba63f9a60047fa9f4f0a7d9629bc0613 Mon Sep 17 00:00:00 2001
From: Keerthy <j-keerthy@ti.com>
Date: Wed, 30 Nov 2016 15:02:53 +0530
Subject: [PATCH] am57xx: Set tps659038 PMIC GPIO7 pad mux value to POWERHOLD
The GPIO7 pad mux should be programmed to POWERHOLD value
as per board design. In cases where the PMIC is shut off the
mux is set to GPIO7 mode. So during initialization to be on the
safer side set the mode to POWERHOLD.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
board/ti/am57xx/board.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index 797d7a4c0c..5f2d4dfab8 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -55,6 +55,9 @@ DECLARE_GLOBAL_DATA_PTR;
#define SYSINFO_BOARD_NAME_MAX_LEN 45
+#define TPS65903X_PRIMARY_SECONDARY_PAD2 0xFB
+#define TPS65903X_PAD2_POWERHOLD_MASK 0x20
+
const struct omap_sysinfo sysinfo = {
"Board: UNKNOWN(BeagleBoard X15?) REV UNKNOWN\n"
};
@@ -457,6 +460,7 @@ int board_init(void)
int board_late_init(void)
{
setup_board_eeprom_env();
+ u8 val;
/*
* DEV_CTRL.DEV_ON = 1 please - else palmas switches off in 8 seconds
@@ -471,6 +475,18 @@ int board_late_init(void)
if (get_device_type() == HS_DEVICE)
setenv("boot_fit", "1");
+ /*
+ * Set the GPIO7 Pad to POWERHOLD. This has higher priority
+ * over DEV_CTRL.DEV_ON bit. This can be reset in case of
+ * PMIC Power off. So to be on the safer side set it back
+ * to POWERHOLD mode irrespective of the current state.
+ */
+ palmas_i2c_read_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2,
+ &val);
+ val = val | TPS65903X_PAD2_POWERHOLD_MASK;
+ palmas_i2c_write_u8(TPS65903X_CHIP_P1, TPS65903X_PRIMARY_SECONDARY_PAD2,
+ val);
+
return 0;
}
--
2.39.5